Two nickels are what fraction of a dollar?
2 answers:
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ANSWER
(3, 11) and (−3, −7)
EXPLANATION
The given system of equations are:
and
or
We equate the two equations to obtain,
We rewrite in standard quadratic form to obtain,
This simplifies to
We solve for x to obtain,
When
When x=-3,
Therefore the solution for the system is (3, 11) and (−3, −7).
(3, 11) and (−3, −7)
EXPLANATION
The given system of equations are:
and
or
We equate the two equations to obtain,
We rewrite in standard quadratic form to obtain,
This simplifies to
We solve for x to obtain,
When
When x=-3,
Therefore the solution for the system is (3, 11) and (−3, −7).